Web and database programming tips

Web and database programming tips.

Contents:
1.	HTML and CSS tips.
Mobile-friendly webpages.
2.	Javascript tips.
Setting the input focus onto a given form field. Using Javascript to run a Perl CGI script.
3.	PHP tips.
4.	Perl CGI tips.
Generating device dependent webpages. Uploading files using CGI and Perl.
5.	MySQL tips.
6.	Multimedia tips.